如何在Android应用程序中解析以下json响应

时间:2014-02-13 10:46:35

标签: java android json

我正在使用Android应用中的webservice。我无法在app中解析以下响应。

总是给出

  

org.json.JSONException:Value   [{ “METER_READING”: “15”, “UTILITY_PLAN”: “1”, “UNAME”: “vinayak@triffort.com”, “kwh_usage”: “3”, “meter_reading_date”: “2014年2月13日”, “ESID”: “ABC”, “METER_ID”: “abc100”}]   at java.lang.String类型的数据无法转换为JSONArray。

以下是我的代码:

StringEntity entity = new StringEntity(jsonObject.toString(), HTTP.UTF_8);
httpPost.setEntity(entity);
HttpResponse response = httpClient.execute(httpPost);
BufferedReader reader =new BufferedReader(new   InputStreamReader(response.getEntity().getContent(), "UTF-8"));
String jsonResultStr = reader.readLine();
JSONObject jObject = new JSONObject(jsonResultStr);
JSONArray jArray = jObject.optJSONArray("data");

我从webservice获得以下回复

  

{ “数据”: “[{\” METER_READING \ “:\” 25 \”,\ “UTILITY_PLAN \”:\ “1 \” \ “UNAME \”:\ “vinayak@triffort.com \” ,\ “kwh_usage \”:\ “9 \”,\ “meter_reading_date \”:\ “2014年2月13日\”,\ “ESID \”:\ “ABC \”,\ “METER_ID \”:\“abc100 \ “}]”}

5 个答案:

答案 0 :(得分:0)

尝试这个简单的代码:

JSONObject o = new JSONObject(new JSONTokener(postResponse));
JSONArray ja = o.getJSONArray("data");

修改

感谢@McDowell进行观察

new JSONArray(new JSONTokener(jObject.optString("data")));

答案 1 :(得分:0)

  

我收到了以下回复

{
  "data":"[{\"METER_READING\":\"25...}]"
}

数据的值不是数组;这是一个字符串。该字符串是有效的JSON,你可以解析,但为什么服务会这样做是不清楚的。

所以这应该有效:

JSONObject jObject = new JSONObject(jsonResultStr);
String parseMeAgain = jObject.optString("data");

答案 2 :(得分:0)

尝试使用以下内容:

jsonResultStr = jsonResultStr.replace( "\\", "" ).replaceAll( "\"\\[", "[" ).replaceAll( "\\]\"", "]" );
JSONObject jObject = new JSONObject(jsonResultStr);
JSONArray jArray = jObject.optJSONArray("data");

答案 3 :(得分:0)

你的json应该是这样的

{
    "myarray": [
        {
            "METER_READING": "15",
            "UTILITY_PLAN": "1",
            "uname": "vinayak@triffort.com",
            "kwh_usage": "3",
            "meter_reading_date": "02-13-2014",
            "ESID": "abc",
            "METER_ID": "abc100"
        }
    ]
}

用于网络电话

public String initializeConnection(String url) {
        String result = null;
        JSONObject jObj;


        try {
            DefaultHttpClient client = new DefaultHttpClient();
            HttpPost post = new HttpPost(url);
            if(client==null){Log.i("Clinet **************** ", "Client is null");}
            //post.setEntity(new UrlEncodedFormEntity(params));
            HttpResponse res = client.execute(post);
            result = inputStreamToString(res.getEntity().getContent()).toString();
            Log.d("Result from server:", result);
            jObj = new JSONObject(result.trim());           
        } catch (JSONException e1) {
            Log.e("Json Exception", e1.toString());
        } catch (ClientProtocolException e2) {
            Log.e("Client Protocol", e2.toString());
        } catch (IOException e3) {
            Log.e("Io exception", e3.toString());
        }
        return result;
    }

    private StringBuilder inputStreamToString(InputStream is) throws UnsupportedEncodingException {
        String rLine = "";
        StringBuilder answer = new StringBuilder();
        BufferedReader rd = new BufferedReader(new InputStreamReader(is, "iso-8859-1"),8);

        try {
            while ((rLine = rd.readLine()) != null) {
                answer.append(rLine);
            }
        }

        catch (IOException e) {
            e.printStackTrace();
        }
        return answer;
    }

从json中退出

ArrayList<String> params = new ArrayList<String>();
String result = networkCall.initializeConnection(url);

jObj = new JSONObject(result);

JSONArray jArray = jObj.optJSONArray("myarray");
params.add(jArray.optString(1));
params.add(jArray.optString(2));
params.add(jArray.optString(3));
params.add(jArray.optString(4));
params.add(jArray.optString(5));
params.add(jArray.optString(6));

现在数据存储在params中,您可以区分&amp;根据需要存储

答案 4 :(得分:0)

你可以这样做:

JSONArray jsonArray = new JSONArray(result); // Pass your result here..
JSONObject jsonObject = jsonArray.getJSONObject(0);
String meterReading = jsonObject.getString("METER_READING");
String plan = jsonObject.getInt("UTILITY_PLAN");
String uname= jsonObject.getString("uname");
String meter_reading_date= jsonObject.getString("meter_reading_date");
String ESID= jsonObject.getString("ESID");
String METER_ID= jsonObject.getString("METER_ID");